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The purpose of this paper is to extend previous studies to a hybrid analysis of three business improvement practices of Lean, Six Sigma and Lean Six Sigma (LSS) within last two decades and identify the research gaps and focusses in more comprehensive and robust classification framework.

A secondary data collection and a literature review were conducted to collect information about peer-reviewed journal articles under six dimensions of a tested classification framework. The frequency and distribution analysis was conducted followed by Pearson’s χ² test to analyse any relationship between dimensions of framework in order to identify the gap.

Despite a relatively great deal of regular research outputs about Six Sigma, Lean and LSS, academic journal articles have been found mainly limited to a few industries, themes and countries. “General manufacturing”, “healthcare”, “automotive” and “electronic industries” as sectors; and “tools and techniques”, “benefits” and “success factors” as key themes have been mostly approached by LSS, Six Sigma and lean management articles. It was also found that there is still a great disparity amongst researchers and journals to publish about these three business improvement practices.

The research publications for LSS, Six Sigma and lean management should have wider approach towards various manufacturing and service sectors, countries and journal publications. A greater level of research/enterprise activities has been found in relation to LSS and Six Sigma articles compared to lean management articles.

This research aims to identify the gaps in research publications during last two decades about three major business improvement practices in one package and through more comprehensive robust classification framework and also through comparative analysis.

This paper aims to present and summarise the arguments for and against the ISO 18404 standard and the perceived advantages and disadvantages of implementing it.

A qualitative interview approach was utilised by interviewing a panel of leading academics and practitioners familiar with Lean Six Sigma.

The results indicate that Lean Six Sigma professionals have conflicting opinions on ISO 18404. An overwhelming majority of the panel questioned the “quality” of the standard and whether it is “fit for purpose”, while others see the advantages of a common standard in helping continuous improvement deployment.

As the standard has not been widely adopted, there were limited examples on ISO 18404 discussion in the literature. Much of the current literature focuses on the theoretical application of the standard, with sparse practical examples providing case study deployment. Also, the interviews were short and at a high level. There is an opportunity for further study and analysis. It was difficult to find qualified interviewees who were familiar with the standard. A very real constraint when conducting research into ISO 18404 is to obtain a balanced view of the standard from those who have a vested interest in its continuation and evolution, or not.

The paper provides a resource for people to obtain insight into the value or non-value add of a standard in Lean Six Sigma and the appropriate details of such a standard. These results can form the basis of a case for the implementation of the standard for those organisations currently trying to decide whether to implement it or not.

This paper gives the background to the ISO 18404:2015 standard and explains its rationale. It aims to correct misconceptions and erroneous statements about the standard appearing in the paper by Antony et al. (2021) and to demonstrate the usefulness of the standard in a wide range of application sectors.

A review of recently reported misconceptions and erroneous statements is presented and clarifications are provided. A qualitative interview approach was utilised to obtain the views of leading academics and practitioners familiar with Six Sigma and Lean in a range of sectors and from different parts of the world. This includes the results of a survey for capturing expectations and requirements for the next ISO18404 version.

Clarifications were needed to correct some misconceptions and erroneous statements in recently published work. However, on review, the reports of the interviews in Antony et al. (2021) indicate that most Lean Six Sigma professionals have positive experiences with ISO 18404:2015 and see the advantages of a common standard in helping continuous improvement deployment. Possible causes of some reported negative results are already scheduled to be addressed in the forthcoming review of ISO 18404:2015.

A very real constraint when conducting research into ISO 18404:2015 is to obtain a balanced view of the standard from those who have a vested interest in its continuation and evolution, or not. Whilst the authors cannot claim to be any more objective than Antony et al.’s (2021) authors and commentators, they are, in contrast to that group, highly knowledgeable about the reality of the standard, rather than speculating in ignorance.

A very real constraint when conducting research into ISO 18404:2015 is to obtain a balanced view of the standard which is balanced with respect from those who have a vested interest in its continuation and evolution, or not. Whilst the current authors cannot claim to be any more objective than previous authors, Antony et al.’s (2021) authors and commentators, they are, in contrast to that group, highly knowledgeable about the reality of the standard, rather than speculating in ignorance.

The paper gives a clear description of the ISO standard development process and provides a resource for people to obtain insight into the value or non-value add of a standard in Six Sigma and Lean, and the appropriate details of such a standard. These results can form the basis of a case for the implementation of the standard for those organisations currently trying to decide whether or not to implement it.

The purpose of this paper is to explore how Lean and Six Sigma’s distinctive practices relate to potential absorptive capacity (PACAP) and realized absorptive capacity (RACAP). The paper seeks to understand which of the practices in Lean Six Sigma are needed to manage absorptive capacity systematically.

Partial least square based structural equation modeling (PLS-SEM) was used to test the theoretical model drawing on a sample of 125 manufacturing organizations in Malaysia. In addition to examining direct effects, the study also examines indirect effects using bootstrapping method to identify possible mediation effects proposed in the model.

The results explain that Lean’s social practices (LSP), Six Sigma’s roles structure (RS) and structured improvement procedure (SIP) positively influence potential absorptive capacity (PACAP). Meanwhile LSP, RS and focus on metrics (FOM) positively influence realized absorptive capacity (RACAP). SIP was found to influence RACAP through PACAP. The analysis reveals the combination of Lean Six Sigma practices that are required in managing PACAP and RACAP differentially.

The study is only confined to manufacturing industries in Peninsular Malaysia. Data collected were cross-sectional in nature. The application of Lean Six Sigma and how it influences absorptive capacity may get sturdier across time, and this may change the effect toward sustainability of firm’s competitive advantage. A longitudinal study may be useful in that context. The study also makes specific recommendations for future research.

The results of this study can be used by Lean Six Sigma practitioners to prioritize the implementation of Lean Six Sigma practices to develop absorptive capacity of the organization through PACAP and RACAP, which needs to be managed differentially as they exert differential outcomes. This would enable organizations to tactfully navigate and balance between PACAP and RACAP in accordance to business strategies and market conditions.

Absorptive capacity in Lean and Six Sigma context has largely been studied as a unidimensional construct or used as a grounding theoretical support. Therefore, understanding the multidimensionality through PACAP and RACAP provide insights on how to enhance and maneuver absorptive capacity through Lean Six Sigma systematically. The findings may pave the way for future research in enhancing the current knowledge threshold in Lean Six Sigma.

Lean and Six Sigma are the two most powerful methodologies for process improvement. They have been widely employed in manufacturing and healthcare industries to achieve substantial cost savings and quality improvement. The purpose of this paper is to investigate the implementation of Lean and Six Sigma for improving logistics operations.

A survey was conducted among 410 companies registered under the Singapore Logistics Association and returned 32 usable responses. χ²-tests were used to identify factors affecting the implementation of Lean and Six Sigma.

It was found that 37.5 per cent of respondents had implemented Lean and the majority of them had implemented Six Sigma together. All implementing companies reported varying degrees of cost savings and productivity improvements. Large logistics companies are more likely to implement Lean and Six Sigma. Companies with a higher service standard are more likely to implement Six Sigma.

The survey was limited to Singapore. Future studies should explore a broader geographical coverage and improve the response rate.

Lean and Six Sigma are applicable for improving logistics operations. Senior management must be committed to support an implementation. Effective training and communications are required for overcoming resistance to change and helping employees to understand improvement methodologies and initiatives.

This research is the very first survey study of Lean and Six Sigma in the logistics industry. It reveals similarities and differences in comparison with the implementation of these methodologies in the manufacturing industry. The findings offer valuable insights for improving logistics operations.

As Lean and Six Sigma have become established as influential concepts in the process improvement area, observers, researchers and managers are awaiting the next step, which many feel could take the form of a combination of the two concepts, known as Lean Six Sigma. A considerable amount of literature has been produced regarding the possible benefits of combining Lean and Six Sigma, which has led to greater support for the idea. The purpose of this paper is to explore an application of Lean Six Sigma in practical improvement work.

The empirical study was conducted through interviews, meetings, document analysis and observations over a period of four months.

Based on this paper, it seems unfeasible to apply one standardised approach to improvements in one company. Continuous smaller improvements and larger improvement projects demand different formulas. It seems that using both Lean and Six Sigma in parallel is appropriate but this should be done through clever cross‐fertilisation.

This paper shows one possible way of working with one improvement concept in one company. It does not claim to present the only possible way of combining Lean and Six Sigma nor does it suggest universal applicability. Further research on other possible combinations would therefore be valuable.

This paper provides an outline of how to structure a combination of Lean and Six Sigma. It can provide valuable insights to managers who wish to structure their improvement processes.

This paper expands the theoretical foundation for combining Lean and Six Sigma by studying and analysing a practical application of the concept. Apart from the paper's value for managers, it can also help researchers understand the compatibility of Lean and Six Sigma.

The purpose of this paper is to identify forces (in the form of converters and inhibitors) of Lean Six Sigma adoption by studying the gradual adoption of Lean Six Sigma in a medium-sized Swedish manufacturing company. The paper suggests how the converters and inhibitors interact toward increased maturity of the adoption and, in this case, stagnation thereof.

Thirteen interviews were recorded and analyzed to identify converters that were moving the process forward or backward, as well as inhibitors that caused it to linger.

It was discovered that activities that had initially moved the process forward were not sufficient to move it beyond its current point. However, an increased knowledge of Lean Six Sigma throughout the organization now prevents the process from moving in the opposite direction. In this medium-sized Swedish manufacturing company, Lean Six Sigma becomes a framework for thought and communication during Lean work.

The study benefited from considering forces pushing the process forward as well as backward. Thus, the authors suggest that future studies will benefit from focusing beyond critical success factors that may at times are static in nature. As a limitation, for discussions about the past, the memories of interviewees, generally, may have a tendency to be biased.

The paper contributes knowledge of Lean Six Sigma adoptions and how they may attain greater future success by reporting on difficulties and setbacks in the current gradual adoption process in a chosen company.

The purpose of present study is to expose the detailed review for benefits and challenges about implementation of Lean Six Sigma (LSS) in business organization and spread of LSS literature in term of various sectors wise, research methodology wise and journal wise.

This paper covers the literature on LSS from 2000 to 2018. The authors have selected a large number of research papers using the keywords as Lean Six Sigma implementation in automotive, micro small medium enterprises, health care, education, financial sectors and many more. A total of 216 research papers have been reviewed on LSS distribution of sector wise, research methodology adopted, active countries, year of publication and critical barriers in implementation of LSS.

The present literature classifies the spread of LSS in four important sectors of manufacturing, health care, human resource, financial and education. It presents the critical barriers and benefits of LSS implementation in various sectors mentioned above and an important research gap, where practitioner/researcher can focus more during their research on LSS.

It is important for industry, researchers and LSS practitioners to be aware about challenges and success factor during LSS implementation in various sectors such as manufacturing, education, financial, human resource and health care. Hence, this paper could provide significant and valuable insights to industry and practitioners for successful implementation of LSS projects.

LSS results in reduced waste, defects and improve process, which in turn provide high-quality products at minimum cost, and this leads to customer delight, which ultimately raises the societal living standard. The results encourage LSS practices without fear because there is a huge discussion of near about all success and failure parameters about LSS.

To the authors’ best knowledge, no studies have still covered the literature review of LSS implementation in three different sectors: manufacturing, service and process. The present study was mainly focused on presenting a systematic review of literature in said sectors and found the gap between current status and future direction for the implementation of LSS in different areas.

The purpose of this paper is to present a framework for integrating Lean Six Sigma DMAIC methodology and belt based training infrastructure with ISO 9001:2008 standard based Quality Management System.

A new model called L6QMS 2008 has been developed from the process based quality management system model of ISO 9001:2008 standard based Quality Management System. This model integrates the Lean Six Sigma requirements as appended additional sub‐clauses in the ISO 9001:2008 standard.

L6QMS 2008 aids an organization in implementing a Lean Six Sigma programme with minimum effort and expenditure.

Results of case studies illustrating the implementation of this integrated approach are presented in this research paper.

This paper presents a unique approach of integrating the three main management models, namely Lean, Six Sigma and ISO 9001:2008 standard based Quality Management System, as a single framework benefiting contemporary organizations.

The purpose of this study is to explore the advantages and obstacles of implementing Lean Six Sigma in Indian MSMEs during or post-COVID-19. The following research also elaborates on the challenges of implementing Lean Six Sigma in MSMEs in India, along with the changes in the culture that are required for providing a proper climate to ensure success in a long-term manner.

The methodology used in this study is a descriptive study, which explores and looks for the factors that influence the impulse or motivation to implement Lean Six Sigma in MSMEs and factors that inhibit the implementation of Lean Six Sigma. To achieve this goal of Lean Six Sigma, a significant review of the existing literature of the subject area has been done to prepare a framework with the help of inferential statistics in view of the critical success factors. This research is a flow and arranged a type of survey of organizations that is conducted using MS-Excel and SPSS 25.0 statistical software. The number of participants selected using a purposive sampling method in this study was 127 Lean Six Sigma experts and owners or CEOs of MSMEs in India.

Lean Six Sigma be used for facilitating the improvement processes in manufacturing operations, quality improvements and productivity. As some obstacles exist in implementing the Lean Six Sigma approach, the improvement processes and outcomes of change in the culture are noteworthy and worthwhile. The implementation of Lean Six Sigma has also some constraints, including cost limitations, skill limitations, limited facilities and other such limitations. The implementation of Lean Six Sigma during COVID-19 is not yet a matter of urgency or priority, and hence, cannot yet be applied.

This paper presents opinions of only a few selected professionals of Indian MSMEs. So it was a crucial aspect of capturing the views of such practitioners of their arrival on valid and sound conclusions.

The novelty of this research is to analyze the advantages and obstacles of implementing Lean Six Sigma in MSMEs during the COVID-19 in India. The results of this research can be used as scientific references for researchers who will conduct future research. Moreover, it can be guidance for MSMEs owners to make decisions in implementing Lean Six Sigma during the COVID-19 pandemic. The organizations assess all of their aspects such as perceive objectives, required qualities and shortcomings for fruitful implementation of any practice.

Several suggestions were made for the methods and thoughts, which will constitute a Lean Six Sigma organization. Hence, the research offers an excellent framework for both working professionals and academicians to understand the view of Indian MSMEs along with their benefits and obstacles of implementing Lean Six Sigma. So this study helps in laying out a platform for understanding the uses of Lean Six Sigma for process excellence in a new era due to COVID-19.